RIO DE JANEIRO - Cameroon's football federation is investigating what it calls "disgraceful behaviour" by some of its players in the 4-0 loss against Croatia at the World Cup, when defender Benoit Assou-Ekotto head-butted a teammate.
FECAFOOT said players could be punished through the internal investigation ahead of Cameroon's final Group A game against Brazil on Tuesday.
Cameroon is already eliminated after two poor performances in losses against Mexico and Croatia.
Towards the end of the game against Croatia in Manaus on Wednesday, Assou-Ekotto thrust his head into the face of Benjamin Moukandjo and the pair scuffled in front of their goal before being separated by another Cameroon player.
Midfielder Alex Song was earlier sent off for elbowing Croatia's Mario Mandzukic in the back in an off-the-ball incident.
"The recent acts of violence that took place during the match against Croatia do not reflect the values of fair play and respect as promoted by our federation," FECAFOOT said.
The "disgraceful behaviour is being further investigated internally."
After the game, Cameroon's German coach, Volker Finke, said the scuffle between Assou-Ekotto and Moukandjo was "unimaginable" and that he would find out "why exactly these two players exploded" on the pitch.
"I think that this team has shown some things that are not acceptable and there will be consequences for the players involved, definitely," Finke said.
The scrap between Assou-Ekotto and Moukandjo was the lowest point so far in a terrible World Cup campaign for Cameroon.
The players initially refused to board a plane for Brazil over a dispute with the federation over bonuses.
They then produced two insipid performances to be eliminated without scoring a goal.
The West Africans finish against Brazil in Brasilia, when they again face leaving a World Cup after losing all three games.
Cameroon lost all their games in South Africa four years ago.